Bluetooth V2.1 + EDR
Operating voltage: 3.3V
UART Interface
This is SPP-C Bluetooth to Serial Module Replaces HC-05 / 06 slave.
Bluetooth Class 2
Built-in PCB radio frequency antenna
Support UART interface
Operating Frequency Band:2.4GHz -2.48GHz unlicensed ISM band
Bluetooth Specification: V2.1+EDR
Weight: 5 g
Bluetooth printer
Bluetooth POS machine
Intelligent home control
Bluetooth wireless data transmission
1 x JDY-31 SPP-C Bluetooth to Serial Module Replaces HC-05/06 slave